Homalaspis

Homalaspis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
Family: Platyxanthidae
Genus: Homalaspis
A. Milne-Edwards, 1863
Species:
H. plana
Binomial name
Homalaspis plana
Synonyms[1]
  • Xantho planus H. Milne Edwards, 1834
  • Gecarcinus regius Poeppig, 1836

Homalaspis is a genus of crabs in the family Platyxanthidae. It is monotypic, the sole species being Homalaspis plana,[2] also known as the purple stone crab[3] or Chilean stone crab.[4]

Homalaspis plana occurs in the East Pacific from the Galápagos Archipelago to southern Patagonia.[3] There is a single record from the west coast of South Africa, likely resulting from shipping or aquaculture imports.[4]

Homalaspis plana lives in the intertidal zone and down to 272 m (892 ft). It is a commercially valuable species.[3]

References

  1. ^ "Homalaspis plana (H. Milne Edwards, 1834". DecaNet. World Register of Marine Species. 2025. Retrieved 12 December 2025.
  2. ^ "Homalaspis A. Milne-Edwards, 1863". DecaNet. World Register of Marine Species. 2025. Retrieved 12 December 2025.
  3. ^ a b c Haye, Pilar A.; Muñoz-Herrera, Natalia C.; Segovia, Nicolás I. (2026). "Limited genetic diversity across a broadly connected range in the fished purple stone crab Homalaspis plana". Global Ecology and Conservation. 65 e04015. doi:10.1016/j.gecco.2025.e04015.
  4. ^ a b Peters, Koebraa; Robinson, Tamara (2018). "From Chile to the South African west coast: first reports of the Chilean stone crab Homalaspis plana (H. Milne Edwards, 1834) and the South American sunstar Heliaster helianthus (Lamarck, 1816) outside their natural ranges". BioInvasions Records. 7 (4): 421–426. doi:10.3391/bir.2018.7.4.11.